64591360 has 80 divisors (see below), whose sum is σ = 161748576. Its totient is φ = 24690688.

The previous prime is 64591357. The next prime is 64591363. The reversal of 64591360 is 6319546.

It is an interprime number because it is at equal distance from previous prime (64591357) and next prime (64591363).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64591363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58332 + ... + 59428.

Almost surely, 2^64591360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64591360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80874288).

64591360 is an abundant number, since it is smaller than the sum of its proper divisors (97157216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64591360 is a wasteful number, since it uses less digits than its factorization.

64591360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1127 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 64591360 is about 8036.8750145812. The cubic root of 64591360 is about 401.2282247996.

The spelling of 64591360 in words is "sixty-four million, five hundred ninety-one thousand, three hundred sixty".